Stamp-head fob



T. WISE.

Ore Stamp.

Patented Feb. 26, 1861.

proved Stamp-Head for Beating Minerals;

UNITED STATES PATENT OFFICE.

THOMAS \VISE, OF BOSTON,

MASSACHUSETTS.

STAMP-HEAD FOR QUARTZ-CRUSHERS.

Specification of Letters Patent No. 31,570, dated February 26, 1861.

To all whom it may concern:

Be it known that I, THOMAS VVIsE, of Boston, in the county of Suffolkand State of Massachusetts, have invented a new and Imand I do herebydeclare that the following is a full, clear, and exact description ofthe same, reference being had to the accompanying drawing, making partof this specification, and representing a perspective view of myimproved stamp-head in an inverted position.

The subject of my invention is a stamp head the face of which iscomposed of a cluster of small bars of steel or other metal held in asuitable socket by means of clamp jaws and an encircling ring as will behereinafter explained.

A, A, represent plates of wrought iron tapering in thickness and securedupon a cast iron core or center by means of rivets a. The projectingends A, A A, A of the plates are set with spaces between their adjacentedges and constitute a socket to receive and tightly clamp a cluster ofsmall bars B, of steel or other metal constituting the face of the stamphead.

C, is a band or hoop which is placed over the smaller end A of the headand driven forcibly over the yielding clamp jaws A, A A A, asrepresented to secure the face B.

(Z, cl, (Z, represent steady pins cast upon the core and projectingthrough the plates A, to sustain the longitudinal jar of the latter.

The face B, is composed .of inch or inch and a quarter steel simply cutout of the rod without requiring any finish. By using rods of this sizeI am enabled to impart to the entire face a uniform drill temper at asmall expense and without danger of cracking. The face is much morereliable and durable than that of a chilled or cast head and is in theend very much less costly. When worn nearly even with the ends of theclamp aws the face may be removed and a plate of iron inserted to causeit to project farther. By this means the steel face may be worn down towithin three inches of its entire thickness and when entirely destroyedthe main part of the head remains equally good for the insertion of anew face.

The materials I have specified are such as I believe to be best adaptedfor the purposes explained, but I do not desire to be understood asconfining myself thereto. vention is specially designed for stamping andcrushing metallic ores and other minerals, but may be used in theconstruction of steam hammers for forging, and for various analogouspurposes.

Having thus described my invention, what I claim as new and desire tosecure by Letters Patent, is,

1. A hammer face B, composed of a cluster of metallic rods as explained.

2. The yielding clamp jaws A, A ,A ,A*, and band C, constructed,combined and op erating in the manner set forth to secure a movablehammer face in position.

The above specification of my new and improved stamp head signed thistwenty-first day of January 1861.

THOMAS \VISE. Vitnesses OCTAVIUS KNIG T, LEWIS IV. BENDRJ J.

The in-

